Robokill: Titan Prime is a futuristic, top-down shooter set in space. The player controls a human in a mech-like robot that is sent in to liberate the space station Titan Prima, orbiting Mars, of a robot invasion. The game consists of three episodes with ten levels in total and the first episode is available for free.

Each level consists of a series of connected rooms that needs to be cleared. There is some role-playing-like customization present as well, as the robot can be equipped with up to four different guns at the same time, shields and medical items. Some of these are dropped by enemies or hidden in crates, but a large amount can also be bought at the shop. Each destroyed enemy provides experience and the robot can level up with better characteristics. Some of the weapons available are blasters, grenade launchers and shotguns. There are different types for each (also level-restricted) and some have special abilities such as a faster firing rate, knockback or freezing the enemy.

Items can be bought using cash icons. When dying, the player can return at a loss of cash and some rooms will have been recovered by the enemy. The robot is controlled through the keyboard while the mouse is used to aim and shoot. Items are equipped in an inventory and some rooms have transportation points that allow for quick travelling, accessible through an overhead map. That way, it is possible to return to the shop at once and sell salvaged items.

Most rooms consist of multiple enemies and they are all robots, ranging from spiders to flying crafts and guard towers. They each have different abilities and their strength is usually marked through a colour (from green to blue and red). There are some traps as well, including ambushes. Some time will needed to be spent choosing upgrades, as some restore the shield during the fight, provide extra cover or only provide advantages when the battle is over. Most of the missions require the player to reach a specific point, usually after passing through a number of doors that require a specific key card, but sometimes a number of objectives needs to be completed first.