Doors Duel: Horde Rush is an innovative strategy game that combines arithmetic challenges with tactical decision-making. Players control a team of characters that automatically move along the bottom of the screen, navigating through doors that present simple math problems. Successfully passing through doors with positive values increases the team’s headcount, while negative values reduce it. This adds a layer of strategy as players must quickly assess which doors to choose to maximize their team’s size before time runs out.

Once players have optimized their team, they face off against a computer-controlled enemy team in an automatic battle phase. The outcome of the battle hinges on the number of units each side has accumulated, making careful planning essential for victory. Overall, Doors Duel: Horde Rush delivers an engaging mix of math and strategy, appealing to both casual gamers and those looking for a more cerebral challenge.