Single-player games like Sime Is Back 18+
Below are 10 single-player Steam games similar to Sime Is Back 18+, 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 Sime Is Back 18+ page.
Ranked picks
- 1
Litmustest
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Litmustest is a Horror Search Action game. Search every room, manage your inventory, solve puzzles and fight the dangers spawning from the depths of this facility. Fixed camera angles and Tank Controls. A limited inventory that forces real decisions about what you carry and what you leave behind.
- 2
Sime Is Back 3D Old School
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Sime Is Back 3D Old School is a retro-inspired action-platformer set on the Adriatic coast. Play as Sime, an old fisherman with a heart of gold but no swimming skills, as he uses a fish to hilariously battle through obstacles, rescue his cats, and outwit greedy villagers.
- 3
Heather Wreath: The Reporter
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
This game acts as the prologue to Heather Wreath: Shoban. In the shadow of a rundown estate, tormented by demented visions you must solve puzzles, fight dreadful monsters, and escape the masked man haunting every step. Inside a retro fixed camera narrative horror.
- 4
Pile 'Em High Episode 3: Convalescence
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Deep in Colorado’s Rocky Mountains, a secluded estate becomes ground zero for terror. Pile ’Em High 3 throws you into nonstop action‑horror mayhem—cultists, zombies, abominations—all standing between you and the truth behind the world‑shattering Pandemic
- 5
Dead Beacon
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Dead Beacon is a first-person survival horror inspired by late 1990s games and taking place in the Beacon manor, a location crawling with zombies and creatures governed by a malevolent will. Survive using the given array of weapons and escape the island.
- 6
Tomb Raider I (1996)
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Adventurer Lara Croft has been hired to recover the pieces of an ancient artifact known as the Scion. With her fearless acrobatic style she runs, jumps, swims and climbs her way towards the truth of its origin and powers - leaving only a trail of empty tombs and gun-cartridges in her wake.
- 7
Croc Legend of the Gobbos
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Join Croc in a charming 3D platforming adventure to rescue the kidnapped Gobbos from the evil sorcerer Baron Dante and his impish Dantini minions! Run, jump, climb, swim, and tail-spin through vibrant worlds in this lovingly remastered and updated version of the beloved 1997 classic.
- 8
Daymare: 1994 Sandcastle
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action with Sime Is Back 18+.
Daymare: 1994 Sandcastle is a third-person story-driven survival horror game prequel to the critically acclaimed Daymare: 1998. Step into the shoes of agent Dalila Reyes, a former government spy now in the service of H.A.D.E.S. unit and prepare to face the true horror.
- 9
Sime Is Back
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Sime's back, celebrated by locals but tired of exploitation. Join him & his feline friend on a whimsical Adriatic journey. Armed with his fish, Sime confronts enemies, smashes crates & reclaims what's his. Dive into this charming adventure of chaos, camaraderie, & fish-flinging fun!
- 10
Sime Returns
Single-player alternative to Sime Is Back 18+ — playable solo, no multiplayer required. Shares Action and Adventure with Sime Is Back 18+.
Sime Returns is a quirky, darkly comedic action-adventure about a fisherman, his cats, and the island that decided it no longer likes him. Rescue your cats from furious villagers, and unravel the mysteries lurking beneath the sunny shores of the Adriatic.