Single-player games like Ultimus bellum
Below are 8 single-player Steam games similar to Ultimus bellum, 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 Ultimus bellum page.
Ranked picks
- 1

BARHEIM
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
BARHEIM is a single-player, 3D Time Management Tower Defense where players experience the chaos of mixing drinks and maintaining a bar while defending themselves from thirsty Vikings!
- 2

PetCraft
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
Build your dream team of powerful pets. Every pet has a unique role, every skill creates new possibilities, and every battle rewards smart strategy over sheer numbers
- 3

King Towers
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
Welcome to King Towers, a challenging Retro Flash Tower Defence. Protect your life, gold and mana from fast and very ugly villagers, knights, evil witches and cows armed to their teeth!
- 4

Monster of Nyum
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
It is an RPG that selects, overcomes, and develops a character with rewards for each turn. If it is determined that your growth is sufficient to subdue the monster, you can further increase the difficulty to increase the probability of obtaining the Soul Soul.
- 5

Majula Frontier
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
The sky over Majula is turning black, the ground is starting to decay, and monsters are returning to the world, forcing a group of retired heroes to band together once more.
- 6

Pixel Fortress: Tower Defense
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
Pixel Fortress is a retro-inspired tower defense game packed with fast-paced real-time strategy. Build your defenses, command powerful abilities, and unleash devastating energy blasts to hold off relentless enemy waves. Can you master the battlefield?
- 7

Hue Defense
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
With stylized graphics, Hue defense is a game based on real life events, when you are called to fight against the worst kind of enemy, the politicians and their supporters. Its time to defend the nation!
- 8

Tales of Valoris: Swallow's Defenders
Single-player alternative to Ultimus bellum — playable solo, no multiplayer required. Shares Strategy and Indie with Ultimus bellum.
Swallow’s Keep is a place of great prosperity; however, not all lands share in its wealth, and it has caught the eye of ambitious adversaries. Can you defend your home against the bandits?