I've been playing Puyo Puyo 2 and Dig Dug 2.

I'm finally starting to be able to make decent combos in PP2, like 4-5 chains.
I need more practice.

Dig Dug 2 never gets talked about even though it's great.
You have to sink the land into the sea to send the monsters into the abyss (which also gives you more points vs inflating them). Very strategic, very fun. I do wish it was easier to identify where grid tiles were sometimes, since you still have grid-aligned Dig Dug movement...
I can make it up to stage 12 so far.