Retroid: Cartridge Protocol
Short description
Endless battlefields, endless threats from the Overmind army. Grow stronger through retro game cartridges, unleash powerful action, and dive into relentless roguelike combat. In this blend of classic vibes and modern impact, become the last hero to reclaim the planet.
- Developer
- Zero1Play
- Publisher
- Zero1Play
- Release
- Fri, Nov 07, 2025
- Price
- $2.99
- Reviews
- 4
- Positive
- 100%
- Followers
- 63
- Owners (estimated)
- 0 – 20K
- Concurrent players
- n/a
- Genres
- Action, Indie, Early Access
- Features
- Stats
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by the $2.99 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 Oct 31, 2026. Charts appear once there is more than one data point — nothing has changed since.
1 data points going back to Aug 2, 2026 lie outside the 90-day window of your plan. Plus shows the complete history.