Tin bent, a crackling sound known as the "tin cry" can be heard from the twinning of the crystals. Tin melts at low temperatures of about , the lowest in group 14. The melting point is further lowered to for 11 nm particles. β-tin (the metallic form, or white tin, BCT structure), which is stable at and above room temperature, is malleable. In contrast, α-tin (nonmetallic form, or gray tin), which is stable below , is brittle. α-tin has a diamond cubic crystal structure, similar to diamond, silicon or germanium. α-tin has no metallic properties at all because its atoms form
Puyo Puyo! 15th Anniversary most cases, players are eliminated when he/she tops out, and the last player (or side) standing wins the round. The DS version of 15th Anniversary supports all multiplayer modes that the DS officially supports. In this mode, players without a copy of 15th Anniversary can play along with those that do. The only difference between playing with a copy and without a copy is that the download and play version does not contain voices or battle animations. The game is functionally compatible, for the most part. Therefore, both the DS Download and Play modes and direct connection modes are accessible