MTG

• Commander with low power brackets, no tutors, no infinite combos, and mostly budget decks.

• Cube Draft.

• Playing precons against the computer using Forge. I copy the names of the precons from a block, then play them against each other using a bit of randomization:

import itertools, random

decks = ["Deck A", "Deck B", "Deck C", ...]
matchups = list(itertools.combinations(decks, 2))
random.shuffle(matchups)

for i, (deck1, deck2) in enumerate(matchups, 1):
    print(f"Match {i}: {deck1} vs {deck2}")

• Aside from the usual Theme Decks, some of the most interesting precons are Duel Decks, Pro Tour Collector Sets, Salvat 2005 and 2011, and Commander decks. You can find a full list of precon decks here.
• Penny Dreadful on MTGO when I want constructed but cheap play.
• I've played a bunch of Draft and Standard on MTG Arena but I didn't really enjoy it that much. It felt like a chore doing the dailies and just caring about getting the four wins per day.

My wife and I have been houseman drafting a cube and it's really fun. We don't try super hard and just have talking about the cards, or other things. Honestly, it's faster than some commander games.

I LOVE draft, so it's cool to have this option that doesn't need fresh packs or 8 people.

@counterspell Commander with people who agree on how commander should be played.

I also have a jumpstart cube, which is fun sometimes. Especially great for new players.

I have been looking for a new format to play and I think for me it's a curated cube. I think that offers the most variety and fun and I personally love PreModern so I will try to put an old-frame cube together next and just play that from now on.

I also like pre-constructed tribal decks that are all aligned on their power level. I think that has been the most fun to take Elves vs Goblins. I love what MtG did with Jumpstart and I think that's all I would play if I had more time/money for Magic now.

Commander. But that being said I have a regular kitchen table group, so power levels and what not are all more or less agreed upon.

I just finished making a battle box with my old bulk & played first few games, it's awesome.

One deck of about ~125 cards(no lands), 20+ of each color. 5 basics & 5 life gain Dual lands(only life gain in the deck) in the "command zone". 10 starting life. 1v1 format with shared deck & graveyard. Focus on simple mechanics & just attacking/blocking. Avg cmc of 3.

Quick fun games, great for beginners or while waiting up for rest of pod to join. I've got 4 sets of lands so can split the deck up into 2 & get two games going with ut.