Rogue Tower combines tower defense with roguelike elements, centering each game on a route that keeps extending as enemies advance. Rather than simply covering a fixed map, players choose where the path grows and try to shape its twists and splits. That makes the route itself part of the defense: its layout affects how long enemies travel and whether different paths feed threats into defenses separately or bring them together.
Tower placement is especially consequential because coverage must be weighed against elevation-based damage bonuses and the limited number of advantageous spots. During a game, card draws let players build towers or improve existing ones, while cash also supports upgrades. The choices respond to changing enemy threats: monsters can heal, move quickly, attack, or summon reinforcements, and nearby enemies may strengthen one another. Different towers are better suited to different opponents, so a strong setup has to balance planning ahead with adapting as new dangers appear.
Between games, earned experience unlocks additional towers and upgrades that can enter later card draws, alongside permanent upgrades that carry a small starting benefit into future games. Its appeal lies in reshaping the battlefield and revising a defense as each run develops.