What's a good Android strategy game where spending a little money gives a lasting advantage?

Total Battle is a mobile strategy title that stands out for its approach to in-game purchases. While entirely free-to-play, the game's economy is designed so that a single, relatively small investment can yield benefits that persist for an extended period. This model addresses a common frustration in the genre where progress feels gated behind repetitive microtransactions. For instance, a strategic purchase of a resource bundle or a permanent boost early on can accelerate base development and army training, establishing a foundation that pays dividends for weeks. The game pairs this with deep strategic systems, including resource management across food, wood, stone, and gold, unit composition for varied battles, and a robust Alliance system for cooperative play. However, reviews indicate that some lower-end devices may experience occasional crashes during specific actions, though these often resolve after a restart. The core loop of building, researching, and engaging in PvE or PvP combat is engaging, and the ability to secure a long-term advantage without a recurring financial commitment is a notable strength for budget-conscious players who don't mind an initial outlay.