Operator Ace's Simple Infinite Survival
Short description
O.A.S.I.S is a simple wave-based zombie survival shooter that combines the best elements of classic arcade-style shooters with the atmosphere of an alternate 80's dystopian world. Just relax and have some fun -- either solo or with up to 3 friends.
- Developer
- Shadow games
- Publisher
- Shadow games
- Release
- Tue, Mar 19, 2024
- Price
- $9.99
- Reviews
- 11
- Positive
- 82%
- Followers
- 37
- Owners (estimated)
- 200K – 500K
- Concurrent players
- n/a
- Genres
- Action
- Features
- Multi-player, Co-op, Online Co-op
- Tags
Review count and SteamSpy's owner range disagree, so the band is widened to cover both rather than picking a favourite. Multiplied by the $9.99 launch price — there is not enough price history for this game to weight the copies by what they actually sold for. Before Steam's cut, VAT and refunds. How these numbers are calculated.
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Media
History
Tracking started Sep 27, 2026. Charts appear once there is more than one data point — nothing has changed since.
Similar games that found an audience
Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with Operator Ace's Simple Infinite Survival. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.
| Image | Name | Studio | Shared | Tag difference | Price | Reviews | Positive | Released | Revenue (estimated) |
|---|---|---|---|---|---|---|---|---|---|
|
Left 4 Dead 2 | Valve 34 titles | 4 | − Early Access − PvE + Co-op + Shooter | $9.99 | 822,638 | 98% | Mon, Nov 16, 2009 | $323m $175m – $437m |
|
Killing Floor 2 | Tripwire Interactive 14 titles | 4 | − Early Access − PvE + Gore + Post-apocalyptic | $29.99 | 87,229 | 89% | Fri, Nov 18, 2016 | $98.6m $50.2m – $126m |
|
Back 4 Blood | Turtle Rock Studios first game | 4 | − Early Access − PvE + Gore + Shooter | $59.99 | 55,320 | 69% | Tue, Oct 12, 2021 | $108m $59.6m – $108m |
|
Deadzone: Rogue | Prophecy Games 2 titles | 4 | − Multiplayer − Zombies + Rogue-like + Rogue-lite | $24.99 | 15,197 | 82% | Mon, Aug 11, 2025 | $10.9m $6.6m – $10.9m |
|
Survive the Nights | a2z Interactive first game | 4 | − Early Access − Online Co-Op + Sandbox + Adventure | $19.99 | 4,668 | 69% | Fri, Dec 05, 2025 | $3.5m $1.8m – $3.5m |
There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.