Arkanoid R 2000 continues onto Round 51 immediately from Round 50, invalidating the need for a code entry, and includes an extra campaign with 100 new levels, several new block types, a rainbow power up (later known as "V" Vanish), and a new worm boss.
Arkanoid R 2000 skips directly to Round 51 without requiring a code, thus obviating the need for input. It also includes an expanded campaign with 100 new levels, innovative block types, a rainbow power-up (later known as "V" Vanish), and a revamped worm boss.