Choose Classic Marathon 2
Choose Classic Marathon 2 if you want a Free To Play experience. On Steam, it's free to play, so the barrier to trying it is zero. Classic Marathon 2 launched in 2024.
Classic Marathon 2 vs Project Corruption
Classic Marathon 2 and Project Corruption both land in Action on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both are Action games on Steam. Classic Marathon 2 (2024) is 5 years older than Project Corruption (2029). Classic Marathon 2 is free; Project Corruption is paid (Price unknown). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Project Corruption
Choose Project Corruption if you want a Strategy, Indie, and Early Access game with HDR available. On Steam, it's the newer release (2029) and ships with the modern feature baseline. Project Corruption launched in 2029.
Both Classic Marathon 2 and Project Corruption sit in Action on Steam and both list Multi-player, Online PvP, and Online Co-op, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Classic Marathon 2 |  Project Corruption | |
|---|---|---|
| Released | 2024 | 2029 |
| Genres | Action, Free To Play | Action, Strategy, Indie, Early Access |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | Free to play | Price unknown |
| Steam reviews | 90.6% positive (297 reviews) | — |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Online Co-op, LAN Co-op |
| Developers | Aleph One Developers | Over Scope Games |
Side by side
- Both are Action games on Steam.
- Classic Marathon 2 (2024) is 5 years older than Project Corruption (2029).
- Classic Marathon 2 is free; Project Corruption is paid (Price unknown).
- Both support cooperative play.
- Classic Marathon 2 is Deck Playable on Steam Deck; Project Corruption has no Deck rating yet.
Classic Marathon 2 vs Project Corruption — FAQ
- Should I play Classic Marathon 2 or Project Corruption first?
- If you want chronology, Classic Marathon 2 (2024) came out before Project Corruption (2029). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Classic Marathon 2 and Project Corruption similar?
- They overlap on Action on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Do both Classic Marathon 2 and Project Corruption have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Classic Marathon 2 ships Online Co-op, LAN Co-op; Project Corruption ships Online Co-op, LAN Co-op.
- Is Classic Marathon 2 free?
- Yes — Classic Marathon 2 is a free-to-play Steam title. Project Corruption is paid (Price unknown).
- Does Classic Marathon 2 run on Steam Deck?
- Yes — Classic Marathon 2 is rated Deck Playable by Valve. Project Corruption doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.