Single-player games like Rift Protocol
Below are 8 single-player Steam games similar to Rift Protocol, 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 Rift Protocol page.
Ranked picks
- 1
SYNCHRONIZERS: UNDEAD MARINES
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Action and Strategy with Rift Protocol.
"SYNCHRONIZERS: UNDEAD MARINES" blends high-quality Three-Lane Tower Defense with Reverse Tower Defense gameplay. Command your units in a thrilling narrative reminiscent of a StarCraft and Plants Vs. Zombies fusion! Your choices will forge the path to victory—or defeat.
- 2
Clankerfront
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Strategy with Rift Protocol.
Clankerfront is a classic isometric RTS where AI research went too far and awakened the world’s home appliances against humanity. Build bases, command armies, fight solo or co-op, and defend the front from the clankers.
- 3
72 Seconds
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Action and Strategy with Rift Protocol.
72 Seconds is a fast-paced isometric action RTS where tactical squad micro meets ARPG progression. Command specialized units, build defenses, upgrade skill trees, and battle hostile alien threats. Adapt to randomized enemy affixes and survive high-stakes campaign permadeath.
- 4
Swarm Queen
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Strategy with Rift Protocol.
A quick-to-learn but challenging real-time strategy game where you spawn an army of space-bugs that control themselves.
- 5
Ashes of the Singularity: Escalation
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Strategy with Rift Protocol.
A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat.
- 6
Aliens: Dark Descent
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Action and Strategy with Rift Protocol.
Drop into the gripping journey of Aliens: Dark Descent, a squad-based, single-player action game in the iconic Alien franchise. Lead your soldiers in real-time to stop a new and terrifying kind of Xenomorph outbreak on Planet Lethe.
- 7
Crossfire: Legion
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Action and Strategy with Rift Protocol.
Crossfire: Legion is a real time strategy game featuring tactical action in furious battles across a shattered version of the near future. Raise and customize your army to engage in intense online combat and carve your own path as you rise through the ranks. It’s a new generation of warfare.
- 8
Line Of Defense Tactics - Tactical Advantage
Single-player alternative to Rift Protocol — playable solo, no multiplayer required. Shares Action and Strategy with Rift Protocol.
A real-time strategy combat game based on the world of the Line Of Defense. Command a team of four Galactic Command marines in highly classified missions in space and on planets.