GSC/RBY
Differences
GSC and RBY operated differently from RS and beyond. In GSC (and RBY, I'll just call it GSC for simplicity), your pokemon's final stats is ONLY determined by its IVs/DVs/Pokegenes. You may train as much as you want to obtain maximum EVs/Stat EXP (the name used in GSC) to max out EACH of the stats.
Note:
- GSCRBY had DVs ranging from 0-15, not 0-31. Each gene therefore controls 2 stat points, thus making a 0 DV mon be 30 points lower than a 15 DV mon in the end.
- Max Stat EXP was out of 65536 (ish), instead of the 510 EVs. Roughly 1040 stat EX is required to increase stats by 1 point.
- When battling a pokemon, the stat EXP received is EQUAL to that pokemon's Base stats in each category. Yes, battling a pokemon will get you stat EXP in EVERY category. Eg: Defeating a Mew will give you 100 stat EXP in each stat.
- Complete listings of base stats and stat exp gains are also found at *link removed*