Franchises starting with I

Primary full run

GOG Preservation Program build 1.01 or later

Windows PC

GOG's maintained build is DRM-free and directly fixes modern-Windows launching, input-device stutter, high-refresh displays, controller support, and hardware validation. It is now the cleanest and highest-fidelity way to play the same campaign.

Definitive edition

GOG Preservation Program build 1.01 or later

Primary full run

NES version through Nintendo Switch Online

Nintendo Switch / Nintendo Classics NES

The NES version is the most practical official route for the core Ice Climber game through Nintendo's current classic-game service. The VS. arcade release has meaningful stage/content differences, so it is logged as a comparison route rather than folded into the NES recommendation.

Fidelity vs completeness conflict

NES and VS. arcade branches differ; use NES for the main route and arcade for comparison.

Definitive edition

NES version through Nintendo Switch Online/Nintendo Classics

Primary full run

Icewind Dale: Enhanced Edition

Windows

Enhanced Edition includes the original game plus Heart of Winter and Trials of the Luremaster, adds modern UI/renderer support, new items/classes/kits, and is the most complete and practical archive route. Windows is the best capture/mod route.

Definitive edition

Icewind Dale: Enhanced Edition on Windows

Primary full run

Icewind Dale II Windows release with Red Chimera Enhanced Edition mod

Windows

No official Beamdog-style Enhanced Edition exists because the source code was lost. The best current route is the Windows release with the community Red Chimera Enhanced Edition mod, which streamlines gameplay, rebalances systems, and adds content.

Fidelity vs completeness conflict

The best modern route relies on an unofficial community Enhanced Edition mod because no official remaster could be made from source code.

Definitive edition

Windows release with Red Chimera Enhanced Edition mod

Primary full run

Current PC release

Windows PC

The Windows PC release is the best archive route because it has the complete game with native PC capture/settings flexibility. The Linux, macOS, PlayStation, Switch, Xbox, and Luna versions are documented access routes, but no sourced platform-exclusive gameplay content over PC is documented.

Definitive edition

Iconoclasts on Windows PC

Primary full run

Current official Gameforge live-service build

Web browser

Ikariam is an official Gameforge browser strategy game, so preservation depends on the current live server/client state rather than a static boxed version. Server, world, account age, and premium/account state define the archive context.

Fidelity vs completeness conflict

The game is a live browser service, so completeness is defined by account/server progress and current version.

Definitive edition

Current official Gameforge browser build

Primary full run

Original Dreamcast release via Flycast/Redream

Dreamcast

Illbleed is a Dreamcast-only survival-horror game with no sourced official remaster, remake, PC port, or modern rerelease, so the original Dreamcast version is the complete canonical release.

Definitive edition

Original Dreamcast release via Flycast/Redream

Primary full run

Green Planet Bundle with Galaxies DLC

Windows PC

Imagine Earth is a real-time planet colonization and climate-aware city-building/strategy game from Serious Bros. It supports Windows, macOS, and Linux/SteamOS, Workshop and level-editor features, and the Galaxies DLC in the Green Planet Bundle. No console or mobile release was found in this pass. Windows PC with Galaxies installed is the preferred archive route for complete current content and capture/settings control.

Definitive edition

Imagine Earth Green Planet Bundle on Windows PC

Primary full run

Current 2.x PC release with DLC/content packs

Windows PC

The Windows PC version is the original and strongest Imperator: Rome route, with the DLC/content-pack path, mod support, keyboard-and-mouse controls, and the best capture/settings flexibility. macOS and Linux are valid native routes, but Windows PC is the safest complete recommendation.

Definitive edition

Imperator: Rome on Windows PC with content packs

Primary full run

Deluxe Edition on Steam/GOG

Windows PC

The Windows PC Deluxe Edition is the best route because it has the full game, PC capture/settings flexibility, and the available digital soundtrack/artbook extras without needing a lower-fidelity console route.

Definitive edition

In Sound Mind Deluxe Edition on Windows PC

Primary full run

CD-ROM talkie version through ScummVM or current PC storefront package

Windows PC

The PC CD-ROM talkie route gives the complete voiced adventure while ScummVM or current storefront packaging makes it reliable on modern systems. Earlier floppy/computer releases are important history but not the simplest complete route.

Fidelity vs completeness conflict

The CD-ROM talkie route is the practical complete route, while original computer versions can differ in audio/video presentation.

Definitive edition

CD-ROM talkie PC version through ScummVM or current PC storefront package

Primary full run

Current PC release with The Order of Giants DLC

Windows PC

The PC release is the most flexible high-fidelity route for MachineGames' first-person Indiana Jones adventure, with settings/capture control and current DLC support. Xbox Series X|S, PS5, and Switch 2 are all official routes, but PC is the cleanest archive path.

Fidelity vs completeness conflict

PC is the best capture route, while Xbox launch context, PS5, Switch 2, and DLC state should be labeled separately.

Definitive edition

Current PC release with The Order of Giants DLC installed

Primary full run

Current Windows PC Steam release

Windows PC

Industries of Titan is an industrial city-building sim/strategy game from Brace Yourself Games. The 1.0 release date is January 31, 2023, after Early Access, with a Windows early-access history preceding it. It has Windows requirements and a soundtrack DLC, with no console, Mac, or Linux release found. Windows PC is the definitive route because it is the release platform and the only route with confirmed current availability.

Definitive edition

Industries of Titan on Windows PC

Primary full run

Original PS3 release / Infamous Collection

PlayStation 3 via RPCS3

Infamous is a PS3-only release and is also included in the PS3 Infamous Collection; PS3 hardware or RPCS3 is the only documented route.

Definitive edition

PS3 release / Infamous Collection

Primary full run

Original PS3 release / Infamous Collection

PlayStation 3 via RPCS3

Infamous 2 is a PS3-only sequel and is also part of the PS3 Infamous Collection.

Definitive edition

PS3 release / Infamous Collection

Primary full run

Standalone PSN release / Infamous Collection

PlayStation 3 via RPCS3

Festival of Blood is a standalone PS3 expansion built from Infamous 2 and does not require the base game.

Definitive edition

PS3 standalone / Infamous Collection

Primary full run

Infamous Collection

PlayStation 3 via RPCS3

Infamous Collection bundles Infamous, Infamous 2, and Festival of Blood on PS3, making it the best packaged route for the Cole-era games.

Definitive edition

Infamous Collection on PS3

Primary full run

PS4 release

PlayStation 4 / PlayStation 5 compatibility

Second Son is a PS4-exclusive standalone sequel and is playable through PS5 backward compatibility.

Definitive edition

PS4 release on PS5 compatibility

Primary full run

Standalone PS4 release

PlayStation 4 / PlayStation 5 compatibility

First Light is a standalone companion/prequel to Second Son centered on Fetch and does not require Second Son to play.

Definitive edition

PS4 release on PS5 compatibility

Primary full run

Xbox 360 backward-compatible release

Xbox Series X/S

Infinite Undiscovery was released for Xbox 360 and is sold/playable on Xbox One and Xbox Series X/S; modern Xbox hardware is the cleanest official high-fidelity capture route.

Definitive edition

Xbox backward-compatible release

Primary full run

Infliction: Extended Cut on Steam/GOG

Windows PC

The Windows PC Extended Cut route is the best version because the PC release was upgraded to Extended Cut, giving it the added content from the console release while keeping PC capture/settings flexibility.

Definitive edition

Infliction: Extended Cut on Windows PC

Primary full run

Ultimate Edition

Windows PC

The PC Ultimate Edition is the cleanest one-route archive target because it includes the base fighter plus the DLC character/content set and gives the best capture/settings path. Original PS3/Xbox 360/Wii U releases are valid launch routes, but are less complete without DLC state documented.

Fidelity vs completeness conflict

Ultimate Edition is content-complete; original console launches preserve first-release context.

Definitive edition

Injustice: Gods Among Us Ultimate Edition on Windows PC

Primary full run

Injustice 2 Legendary Edition

Windows PC

The Legendary Edition bundles the post-launch character/content route and PC provides the best capture/settings path. Gear, source-crystal/economy, online, and mobile companion states should be documented because they affect completeness.

Fidelity vs completeness conflict

Legendary Edition is the content route, while gear/online/mobile-link states remain live/account dependent.

Definitive edition

Injustice 2 Legendary Edition on PC

Primary full run

Current PC release with Kaycee's Mod

Windows PC

The Windows PC version is the best archive route because it has the complete game plus the official free Kaycee's Mod mini-expansion, with PC capture/settings flexibility. Later Linux, macOS, PlayStation, Switch, and Xbox versions are documented access routes, but no sourced platform-exclusive gameplay content over PC is documented.

Definitive edition

Inscryption on Windows PC with Kaycee's Mod

Primary full run

Current Steam PC release

Windows PC

INSIDE is a tightly authored single-player game with no known platform-exclusive story content. The PC release is the best capture/settings route, while console/mobile ports are useful access paths.

Definitive edition

Current Windows PC release

Primary full run

Into the Breach: Advanced Edition on PC

Windows

Windows has the complete Advanced Edition content, flexible capture, and native PC controls; Switch and mobile are excellent portable routes but not higher fidelity.

Definitive edition

Into the Breach: Advanced Edition on PC

Primary full run

Current Steam/GOG PC release

Windows PC

Bombshell is sourced as a Windows-only entry in the Bombshell series, so the Windows PC version is both the complete and highest-fidelity available route.

Definitive edition

Bombshell on Windows PC

Primary full run

Current PC release with Aftershock DLC

Windows PC

The Windows PC version is the best archive route because it has native PC settings/capture flexibility, the Aftershock expansion route, and the broadest access to the Build-engine PC ecosystem; the console ports and Linux release do not have exclusive campaign content over PC.

Definitive edition

Ion Fury on Windows PC with Aftershock DLC

Primary full run

Current PC release

Windows PC

The Windows PC version is the best archive route because it is the launch PC build with native PC settings/capture flexibility, while the PlayStation and Xbox releases do not have platform-exclusive story or gameplay content over PC.

Definitive edition

Phantom Fury on Windows PC

Primary full run

Original 2008 HD console movie-tie-in release

PlayStation 3 / Xbox 360 HD branch

The 2008 Iron Man game is a licensed movie tie-in with no sourced current storefront route. The PS3/Xbox 360 branch is the HD route for capture, while PC/PS2/Wii/PSP/DS releases should be labeled as separate lower-spec or handheld branches.

Fidelity vs completeness conflict

Licensed and delisted status makes owned media necessary; HD console, PC/lower-spec, and handheld branches should be tracked separately.

Definitive edition

Owned PS3 or Xbox 360 HD console copy

Primary full run

Current PC build with Friend's Pass/co-op state documented

Windows PC

It Takes Two is designed exclusively around two-player co-op, and the PC version gives the strongest capture/settings path while preserving local or online split-screen play. The Friend's Pass/access setup and partner state are part of the archive context.

Fidelity vs completeness conflict

The game requires two-player co-op; partner setup and online/local state are part of the route.

Definitive edition

Current Windows PC build with co-op/Friend's Pass state documented

Primary full run

Current PC release

Windows PC

The Windows PC version is the original IXION release and has the best capture/settings route. PS5 and Xbox Series X/S are valid 2025 console ports, but they do not add sourced exclusive gameplay content over PC.

Definitive edition

IXION on Windows PC