This mod upgrades mob spawners to have increased range and (slightly) better spawn rates. There are 3 levels of upgrades - With increasing upgrade level, the given mob spawner gets slightly improved.

This mod was created for the main purpose to keep mob spawners active when players leave their default spawn range (which is only 16 blocks).

Usage:

Placing a spawner upgrade on top of a mob spawner activates the effect

Red sparkles should appear above the upgrader, indicating that it is enabled

Recipes:

 Spawn Upgrader I:

 Spawn Upgrader II:

 Spawn Upgrader III:

Effects: