As of Generation IV, now the bag is bottomless and you will never need to use the PC item storage system again in those games, while later generations completely removed the item storage system. The official tournament formats have gone through several changes, but the ones featured in the early generations were especially different. Shininess was determined by IVs. The backpack in Generation I had no way of sorting or organizing your items apart from moving them up or down in the list , making it tedious to scroll through your big list of items just to find the new item you acquired. On the English side, the names "Mr. The sixth only has six, but the two mascots are still central to the plot. Several other exclusive early weird mechanics from Generation I. Bug and Poison were super-effective against each other; later games would have Poison resist Bug with Bug taking neutral damage from Poison. High critical hit ratio moves were practically guaranteed a Critical Hit. Experience did not appear onscreen during battle. TMs only had one use each in the first four generations. Likewise, it should have been great defensively as well, only vulnerable to itself which was irrelevant for the reasons stated previously and Ice while resisting Grass, Fire, Water, and Electric. Gen II added only one new Ghost-type, Misdreavus, the first pure-Ghost type; this caused some confusion since its weaknesses were different from what many assumed was normal for ghosts—Gastly's family is only weak to Psychic and Ground because it's part-Poison. Using trapping moves Wrap, Bind, Fire Spin, Clamp completely immobilized the target until the attack wore off after turns. The second generation was the first to actually incorporate them into the story, and even then they weren't the main focus. Instead, Crystal used Suicune — a "lesser-tier" legendary with a small connection to Ho-Oh — for its mascot. There used to be just one Special stat, which served as both Special Attack and Special Defense, instead of it being divided into two stats like it is today.