IMHO.

Games like Annexation

If Annexation is your kind of game, the closest matches are Demra: Rifts of War, Valdrax Beyond the Rift and Castles & Castellans — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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About Annexation: Annexation is a fast-paced real-time strategy game with old-school roots. Build bases, train armies, and outmaneuver your enemy to claim victory. Start by playing the campaign and then challenge yourself in Arcade Missions, which bring the intensity of multiplayer RTS into a single-player setting.

2027ActionStrategyIndieWindows · macOS · Linuxby Hotkey Clicker
Annexation — Steam game cover

Players who liked Annexation also play

Steam players who put hours into Annexation also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Demra: Rifts of War

    WHY THIS

    Top pick for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Strategy with Annexation.

    Classic 90s RTS gameplay mixed with direct hero control and grid-based real-time movement. Command your army and wield powerful light magic to fend off the demon invasion.

    2026StrategySteam ↗
  2. Valdrax Beyond the Rift

    WHY THIS

    Second-strongest match for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Annexation.

    Build a kingdom from nothing, forge your armies, and breach the rifts between worlds. Face endless enemies, recruit legendary creatures, and prepare for the ultimate battle against the Demon Lord. Every map is different. Every death is permanent.

    2026StrategyIndieSimulationSteam ↗
  3. Castles & Castellans

    WHY THIS

    Third-strongest match for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Annexation.

    Castles & Castellans is a hybrid of real-time strategy and third-person action. Rule from the castle-building RTS view - construct, manage, and fortify against looming threats. Then step into the castellan’s boots in TPP, fighting side by side with your soldiers atop the very walls you built.

    2026ActionStrategyIndieSteam ↗
  4. Clankerfront

    WHY THIS

    Ranked #4 for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Annexation.

    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.

    StrategyIndieSteam ↗
  5. ZeroSpace

    WHY THIS

    Ranked #5 for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Annexation.

    ZeroSpace is a sci-fi hybrid RTS game with a story-rich, party-based RPG campaign. As commander of the Protectorate forces, you must upgrade your mothership, build strong relationships with your crew and recruit a formidable army. Navigate the hard choices that will shape humanity's future.

    2026ActionStrategyIndieSteam ↗
  6. HyperCoven

    WHY THIS

    Ranked #6 for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Strategy with Annexation.

    HyperCoven is an old-school, fast-paced RTS where there's no time wasted collecting resources. Capture Coven all over the map, which will summon from among 55 unique units for you – for free. Only make sure they’re not snatched from you. Did we mention the map has no borders?

    2025Strategy5.99 USDSteam ↗
  7. Sword & Banner

    WHY THIS

    Ranked #7 for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Strategy with Annexation.

    Mount & Blade meets Total War with classic RTS controls - brought to life in pixel art. Lead your warband across a living fantasy world, raid settlements, trade goods, and fight large-scale tactical battles with formations, dynamic weather, and an army you build from peasants to knights.

    2026StrategySteam ↗
  8. Crypt Keeper

    WHY THIS

    Ranked #8 for Annexation fans by collaborative filtering across millions of Steam libraries. Shares Action and Strategy with Annexation.

    Unleash your inner necromancer in Crypt Keeper – a roguelite tower defense game. Raise skeleton armies, defend your crypt, and manipulate enemy waves with the ESSENCE-IAL update.

    2025ActionStrategyIndie9.99 USDSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Life is Strange - Episode 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Annexation.

    Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  2. Helltaker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Annexation.

    Helltaker is a short game about sharply dressed demon girls.

    2020IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  3. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Annexation.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  4. The Murder of Sonic the Hedgehog

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Annexation.

    Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!

    2023IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  5. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Annexation.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  6. Grimm's Hollow

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Annexation.

    A spooky, freeware RPG where you search the afterlife for your brother. Reap ghosts with your scythe, explore haunted caves, and eat ghostly treats on your journey through death.

    2019IndieAdventureRPGFreeDeck PlayableSteam ↗
  7. The Expendabros

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Annexation.

    The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.

    2014ActionIndieAdventureFreeDeck VerifiedSteam ↗
  8. Iron Snout

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Annexation.

    Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.

    2016ActionIndieFree To PlayFreeDeck PlayableSteam ↗

Frequently asked about Annexation

What games are most similar to Annexation?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Annexation are Demra: Rifts of War, Valdrax Beyond the Rift, Castles & Castellans.
Who developed Annexation?
Annexation was developed by Hotkey Clicker.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Annexation.

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