Ancient Planet is classic tower defense game. The stronghold of an ancient civilization has been invaded by hordes of alien raiders. Use powerful technologies of the Ancient and repel the attack of the enemy's armies!
The objective is to defend your base from waves of alien invaders by constructing and upgrading defensive towers. Players must carefully consider the strengths and weaknesses of different tower types and enemy units to devise effective strategies.
The game features 7-8 tower types, including physical damage towers, energy-based towers, slowing towers, and support towers that provide buffs. Each tower can be upgraded several times, unlocking new specialized variants with unique capabilities. This tower upgrade system allows players to tailor their defenses to the specific challenges posed by different levels.
Players earn currency (gems) from completing levels, which can then be used to purchase and enhance upgrades for their towers, base, and special abilities. Deciding how to allocate these limited resources is crucial, as certain upgrades may be more beneficial than others depending on the level's layout and enemy composition.
The game offers 40 unique levels, each with its own challenges and enemy compositions. To progress, players often need to revisit and replay earlier levels to grind for additional upgrades. This replayability allows experimentation with different tower placements and upgrade paths, encouraging a trial-and-error approach to finding optimal strategies.
The difficulty is generally well-balanced, although some players have reported sudden difficulty spikes in certain levels. The game provides an easy mode option, and the ability to reset and redistribute upgrades helps mitigate the impact of these challenging sections.
Players praise the responsive and satisfying tower placement mechanics, as well as the variety of tower types and upgrade paths. The well-designed levels and enemy compositions are also frequently cited as highlights, as they require players to adapt their strategies to overcome the unique challenges presented.