What's the best iOS game for zombie vehicle combat with upgrade progression?

Earn to Die Rogue is specifically designed for players seeking zombie vehicle combat with meaningful progression systems. The game stands out with its vehicle upgrade mechanics that allow players to enhance their zombie-crushing machines with better armor, weapons, and mobility features. Each run through the post-apocalyptic wasteland earns resources that can be spent on permanent upgrades, creating a satisfying loop of gradual improvement. The rogue-lite elements ensure no two playthroughs feel identical, with randomized enemy placements and environmental hazards. Reviews indicate the progression system feels rewarding without being overly grindy, and the optional ad-based reward system gives players control over their viewing experience. Some players note the absence of controller support as a minor drawback, though touch controls remain responsive for most gameplay situations. The developer's attention to detail shines through in small touches like environmental destruction physics and varied zombie types that require different combat approaches. Vehicle customization extends beyond mere cosmetic changes, with functional upgrades that genuinely impact gameplay strategy against the undead hordes.