Single-player games like Protocol Delta
Below are 8 single-player Steam games similar to Protocol Delta, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Protocol Delta page.
Ranked picks
- 1
![GunDeck[100] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/2614790/2218885ce9ffa13643dafaee21450afad7e9287a/header.jpg?t=1759986058)
GunDeck[100]
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action and Indie with Protocol Delta.
GunDeck[100] is a lightning-fast twin-stick shooter where you’ll build your arsenal from randomly-dealt cards. Weapons fire in a rainbow of elements with unique effects. Dart and dodge to survive the fireworks unleashed against you, and retaliate with your own display! Can YOU survive to wave 100?
- 2
Square Shooter
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action with Protocol Delta.
This is a minimalistic fast-paced shooter with a high level of difficulty
- 3
Bit Breaker
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action and Indie with Protocol Delta.
Bit Breaker is a short brick-breaking incremental bullet hell. Collect resources to upgrade your balls and fight back against the nodes taking over humanity.
- 4
ROGUELINE
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action and Indie with Protocol Delta.
TwIn-stick RogueLike Shoot'em up Action!
- 5
Bullet Debt
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action with Protocol Delta.
A minimalist arcade arena shooter where your bullets never disappear. Every shot you miss keeps ricocheting until it hits something — an enemy, or you. Dodge your own accumulating crossfire across 50 levels, or turn it on your friends in local versus for 2 to 4 players.
- 6
Super Asqr
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action and Indie with Protocol Delta.
Super Asqr is a collection of different game types and modes, both single and multiplayer, offered under one package with simple but elegant visual/audio feature set. Being a live game and guided by community, all these game modes are shaped by player feedback!
- 7
Orbit Breaker
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action with Protocol Delta.
Choose a geometric core, survive escalating waves with automatic weapons, and evolve matching weapons and passives into stronger builds. Explore sectors, find unlocks, and defeat the boss.
- 8
VCTR
Single-player alternative to Protocol Delta — playable solo, no multiplayer required. Shares Action and Indie with Protocol Delta.
Shoot. Dash. Collect. Upgrade. VCTR is a kinetic arcade shooter where two simple actions create countless strategies. Read the field. Choose when to act. And turn the chaotic battlefield into a dance of high-risk, high-reward play.