Weird is a relative term. Depending on what systems you have tried and your overall background, your weird is different than everybody else’s. That’s why, for example, my weirdest game is Open Legend RPG. Why? Because it features exploding dice. For me, it was really really weird that you could roll
Troika. Surreal space fantasy based on the Fighting Fantasy books. Lottery initiative. Ordered inventory; roll to take out items during combat.