Six generations of Pokemon games have released over the last 20 years of the franchise’s existence, and we rank each generation in the series from worst to best.

20 years ago, the Pokemon franchise was introduced to the world, and changed the face of gaming forever. Pokemon has become one of the most popular and successful media franchises of all time since the first two games debuted in Japan in 1996, and the result has been an endless stream of games starring the iconic pocket monsters.

While the various spinoffs have been met with different levels of enthusiasm from franchise fans, each Pokemon generation in the main series has released to positive reviews and millions of sales. Even so, some Pokemon generations have proven to have a more significant impact on the series than others, and with Pokemon Sun and Moon set to launch later this year, we decided to rank each generation from worst to best.

In honor of the upcoming release of Pokemon Sun and Moon and in recognition of the franchise’s 20th anniversary, here are the generations of Pokemon so far, ranked from worst to best:

6. Pokemon Black & White (Gen V)

Ranking Every Pokemon Generation - Pokemon Black and White logos

As the second generation of Pokemon games released on the Nintendo DS, Pokemon Black and White didn’t have any new technology to take advantage of, which puts the fifth generation at a disadvantage compared to most of the other ones on the list. Even so, Black and White did introduce some cool new features to the series, such as triple battles and fully animated Pokemon – a precursor to the graphical leap that would come with Pokemon X & Y a few years later.

Where Black and White falters compared to other games in the series, is perhaps in regards to some of the new Pokemon it debuted. For example, it was with the Black and White generation that we were subjected to Pokemon based on ice cream, candles, and even bags of trash. Here’s hoping the new Pokemon designs in Sun and Moon are a little more creative.

5. Pokemon Diamond/Pearl/Platinum (Gen IV)

Top 10 Starter Pokemon - Piplup in Pokemon anime

Pokemon Diamond and Pearl were the first main series Pokemon games that graced the Nintendo DS. As a result, the games are packed with new features, including online multiplayer gameplay and a number of side activities that are still seen in the games to this day. Even with these advancements, though, Diamond and Pearl failed to take full advantage of the graphical capabilities of the Nintendo DS, and also played it safe in terms of gameplay – hence why this particular generation is not higher on the list.

4. Pokemon Ruby/Sapphire/Emerald (Gen III)

Pokemon Omega Ruby and Alpha Sapphire Villains

While the third generation of Pokemon games didn’t offer much in terms of brand new features, the games made some important tweaks to the core gameplay. For example, Ruby and Sapphire are the first games in the series where Pokemon have abilities and natures, which has had major implications on competitive gameplay for the franchise. Furthermore, Pokemon Ruby and Sapphire also featured some of the most popular starter Pokemon to date, in the form of Treecko, Torchic, and Mudkip.

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