Kingdom Rush 6: Genesis TD v1.01.012

Pvz Lex Lawn is a fan-made tower defense demo: place plants, hold the lawn, and stop zombie waves across 13 levels. Free on Android, by Slv_Rbz. Unofficial fan game, not connected to EA or PopCap, and intended for adults only.

Hell Rush is a free merge hero defense game: build towers, merge upgrades, and survive brutal waves and boss fights. By 88,63%, on Android.

TownsFolk by Short Circuit Studio is a turn-based settlement game with a pixel-style frontier colony. Balance food, gold, faith and production, handle random events, and grow your colony through replayable roguelite runs, skirmish scenarios and puzzle-style missions.

Age of Empires Mobile by Level Infinite brings the classic real-time strategy series to phones: build an empire, command armies, and lead historical civilizations. Join alliances, coordinate with friends, and fight in large multiplayer battles and alliance wars.

Forge Master is a crafting and combat game where you shape weapons across different eras and build stronger gear as you advance. You combine materials, improve your anvil and create equipment that boosts your character's strength in battles, with clans and short battles along the way. You can progress through regular play, though premium items can speed things up. Most features need an internet connection, so offline play is limited.

Elvenar by InnoGames is a free fantasy city-building strategy game for Android. Choose Elves or Humans, build and grow your city, research technologies, produce and trade goods, scout provinces, and join a Fellowship. Your progress carries over to the PC browser version too.