Rift Tiles

Drop shards into columns and fuse equal ones into bigger shards, while the rift sweeps the small ones away. Upgrade the board itself in the Forge between levels, with two preset slots for swapping which tracks are switched on. Every 10th campaign level swaps the usual goal for a surge boss — one of three rotating rift-stone shapes, telegraphed by a banner before it drops — and a cascade of three or more merges earns a named Chain callout with a coin bonus.

20 authored levels, then it keeps generating, plus Deep Rift and a seeded Daily Rift