Initiative tracker:
- GURPS is just determining turn order statically and going round and round forever.
- D&D seems to involve a single roll, at least in the more recent edition?
- Lancer has alternating PC/NPC turns with popcorn-style 'choose your same-team successor' mechanics.
Damage tracking:
- GURPS cares about some damage thresholds, but those are mostly straightforward. And about rolling depending on passing some thresholds, or taking a certain amount of damage in one go, which is less straightforward.