Mr Driller 2 (Japan)

Mastering Mr. Driller 2 on GBA takes a mix of strategic planning and quick reflexes, and these tips will help you reach deeper depths and beat personal high scores. First, always prioritize oxygen management: your oxygen depletes steadily over time, and only refills when you clear groups of matching blocks. Larger groups of connected matching blocks give more oxygen and far higher points, so avoid clearing small 4-block groups when you can create a larger connected group to earn more oxygen and boost your score. Always plan your route ahead of time: look for gaps between blocks and avoid drilling unnecessary single blocks that will leave you stranded with no clear path forward. When you clear a group and other blocks start to fall, pause for a split second to see how they land before you drill further, this avoids getting trapped between unconnected blocks that waste your precious oxygen as you dig around them. To unlock all playable characters, complete the main campaign on different difficulty levels: each character changes up the gameplay, with some starting with extra oxygen and others having faster drilling speed, so test different options to find one that fits your playstyle. For endless high score mode, focus on creating chain reactions: when one cleared group causes other matching blocks to connect and clear automatically, you get huge point bonuses and a large oxygen refill. Don't panic when the screen fills up with blocks: slow down and look for the largest possible connected groups to clear first, rather than digging randomly just to get deeper faster. Beginners should start on the easiest difficulty to get used to drilling speed and block physics before moving to harder challenges that feature faster oxygen depletion and more mixed block colors.