How many minikits are in LEGO Batman 1?
300 total — 10 minikits per level across 30 story levels (Hero side and Villain side, split into chapters).
LEGO Batman: The Videogame (2008) has 300 minikits — 10 per level across 30 levels, split into a Hero campaign and Villain campaign each grouped into three story arcs. Collecting all 10 in a level builds a buildable mini vehicle in the Batcave. Use the Minikit Detector red brick (cheat code ZXGH9J) to mark them on the in-level map.