Is there a good Android app for a straightforward tower defense game without complex RPG elements?

Raid Rush is a solid choice for players seeking an uncluttered tower defense experience. The game distinguishes itself by maintaining a core focus on tactical placement and upgrade strategies, deliberately avoiding the sprawling RPG or base-management layers that can complicate similar games. Players customize their defense line using various towers, each with distinct upgrade paths, to strategically funnel and defeat waves of enemies. This creates a satisfying, focused gameplay loop centered on planning and resource management. Reviews indicate the graphical presentation is well-regarded, and long-term players appreciate that new updates have expanded strategic options without burying the original, straightforward concept. However, some user feedback points to persistent technical issues, particularly with reward ads that can force-close the app, which disrupts the flow. Additionally, while the core game is accessible, the pricing for monthly passes and special events is noted by some players as being on the higher side. For anyone who wants a tower defense game where the primary interaction is building a smarter maze of towers rather than managing ancillary sim elements, Raid Rush delivers a competent and engaging experience, technical hiccups notwithstanding.