Mine diamond drops two heroes into a relentless defense mission: keep the Big Diamond intact while waves of enemies close in from every direction. The game runs on both computers and mobile devices, and supports solo play or a cooperative two-player session where each person commands one of the two characters.
The two heroes are Obby and Noob. Obby covers the left side of the screen and Noob covers the right, so a second player can jump in without any extra setup. In single-player mode, one person manages both characters independently. Heroes attack nearby enemies automatically, which keeps the action focused on positioning and defense rather than manual targeting.
Enemies that slip past the heroes and move off-screen chip away at the Big Diamond's durability. A special enemy type called Creepers poses a permanent threat — they deal their damage regardless of whether they are destroyed before reaching the diamond. Defeated enemies drop diamonds that are automatically drawn toward the Big Diamond, and collecting those gems funds new weapons and upgrades.
If the wave-defense and survival tension of Mine diamond appeals to you, Shard Storm delivers a similar endless defense loop where you protect a gem hero from escalating monster waves, with 10 distinct enemy types and a boss every 25 waves. For a deeper strategic layer alongside the survival pressure, Dream Reaper Defense challenges you to build an economy, upgrade defenses, and hold off a relentless attacker night after night.
Browse the full survival games catalogue for more titles built around staying alive under pressure, check out the two player games section for more co-op experiences like Mine diamond's split-screen partnership, or explore the 2D games collection for action-packed titles in the same visual style.