Simple rules, real thinking
Tap the front crate of a column: it moves into a free cell of the hive. Each bee eats one cell of its own color. Only the bottom cell of each column can be eaten: glowing cells are the ones you can eat now. A crate with nothing to eat waits and blocks its hive cell, so choose your order well. Hive full and nobody can eat? Continue with one extra hive cell, or replay. Every level can be won without boosters. No timer, no lives, no penalty.