All Gens What are Tiers and why do we have them?

Firstly, the reason we have tiers, is because some Pokémon aren't good enough to be used at a really high level when playing with the main rules, so we remove some of the better Pokémon so that you can use your favourite Pokémon in a set of rules where they are good! That's why we have tiers, but what are they?

Basically, tiers are sets of Pokémon, with rules. Pokemon Perfect's main tiers are all played in singles format (currently), and I'll explain a bit about how they work here. We play in singles since you can play in singles in every generation, and our tiers start in the first generation (called RBY, which stands for Red, Blue and Yellow), going all the way up to the current generation (which we call SM after Sun and Moon). Every generation's tiers are separate, and we play each generation with only the items, moves, etc. that were available in that generation. We have short names (acronyms) for each, usually named after the games.

RBY is Red Blue Yellow, the first generation. Note that we play RBY without tradebacks from generation 2, and with the rules of the game (called mechanics) on cartridge rather than Stadium. GSC is Gold Silver Crystal, the second generation. ADV stands for Advanced, tieing all of the various games from that generation together (there were quite a lot). HGSS stands for Heart Gold Soul Silver. BW2 stands for Black 2 and White 2. ORAS stands for Omega Ruby and Alpha Sapphire. SM stands for Sun and Moon.

With Pokemon Perfect's main tiers, each tier with a bigger number fits inside that of a smaller number. For example, everything allowed in ADV 2U is allowed in ADV 1U, but not the other way around. For example, Flygon is allowed in ADV 1U but not ADV 2U, but any Pokémon in ADV 2U is allowed in ADV 1U. Note that the same thing is true with letters, e.g. everything in ORAS 1U is allowed in ORAS 1P, but it doesn't work the other way around. For example Primal Groudon (i.e. Groudon holding a Red Orb) is allowed in ORAS 1P, but not in ORAS 1U. Using different letters other than P and U is possible too, used to indicate subtle differences in power, but these are rarely played or seen. Do not worry about them!

I'll also explain our clauses and other rules here:

HP Percentage Mod - When you play on a simulator, the simulator reports your opponent's HP in percentages. Note that this is more information than is given on cartridges. If you want simulators not to do this, please discuss it with the authority of those simulators, rather than here.

Sleep Clause - Originally introduced by Nintendo in Stadium, this Clause states that you can only send to sleep one of your opponent's Pokémon at a time.

Freeze Clause - This rule was also introduced by Nintendo in Stadium. It states that you can only freeze one Pokémon at a time on the opponent's team. This clause is only used in RBY and GSC.

Species Clause - This rule was also introduced by Nintendo in Stadium. It states that you cannot bring 2 Pokémon of the same Species (i.e. same National Dex Number) into a match.

Banned moves: OHKO moves (such as Fissure and Guillotine) and Evasion-boosting moves (such as Double Team) are banned too, and this is typical for all generations, in singles. Swagger is also banned in ORAS and SM.

If you have any questions about why, please post in the thread! I know it looks like we're just banning stuff we 'don't like', but there are good reasons to disallow them, although they're a little long to state here, especially as with OHKO moves the Pokémon which abuse the move to the point where we need to ban them changes depending on what generation and tier you look at.

If you have any questions, feel free to post them in the thread!

Please note: We are aware that the main tiers played on here are NOT Nintendo's official formats. We are happy for people to play Nintendo's formats, and if they want, talk about them on our forums. However, we recommend that Nugget Bridge and Smogon are probably the best forums to discuss Nintendo's formats currently.

 

Freeze clause is in gsc buddy

 

alas, that is true