There have been multiple generation and much more adventures in Pokemon and every one experiences them differently. When gamers talk about their favourite games in the franchise, there are certain titles that always emerge as key releases in what makes Pokemon strong.

Classic Foundations That Started It All
Without the original Pokemon games, none of the others would exist. The concept of catching, training and battling pocket monsters was first introduced to the world through the Red and Blue versions. It was a formula that would take the world by storm and end up having millions of fans worldwide. These games for the Game Boy were notable for the emergence of the trading mechanics and version differences that became staple features of the series. Back in those days they sold for around $29.99 each.
The yellow version made this base superior with anime elements that let players start with Pikachu as their friend. Many players today experience joy by linking the video games and animated series created in the 1990s and 2000s.
The Golden Age of Pokemon Adventures
The franchise underwent a drastic change with the Gold and Silver versions. These games for the Game Boy Color introduced the features of day and night cycles, breeding and new region. The Pokemon world was built on the backs of the players who had played these games. It has extended beyond the original 150. Furthermore, this was also the first time a variety of concepts were introduced which we still see within the franchise today.
The crystal version that has further refined this generation adds features. Being able to play as female characters for the first-time proved the franchise was moving on from its game-play and audience.

Revolutionary Advances in Modern Pokemon
The Game Boy Advance era was introduced to Pokemon by Ruby and Sapphire and it had better graphics and the introduction of new battle mechanics. The addition of abilities, double battles, and Pokemon contests provided more than just gym battles. The emerald version of the game includes elements from both versions of the game in addition to the battle frontier which gives extensive post-game content
The transition of Pokemon franchise to Nintendo DS was through the Diamond and Pearl series. These games took advantage of the two screens and added online trading through Wi-Fi. The upgrade, which is Platinum version, enhanced upon the original game in wonderful ways. Particularly, the story elements and more legendaries made for a quality sequel.
Innovation Meets Tradition
The Black and White games took most of the risks in being a bit bolder and using a whole new Pokemon roster until postgame. Although this decision sparked mixed reactions, it showed that the franchise was ready to cut corners. The Unova area grew bigger while using old Pokemon in the sequels, Black 2 and White 2.
Through X and Y, Pokemon finally made the jump to 3D on the Nintendo 3DS, alongside Mega Evolution and customizable trainers. This game was sold at $39.99 which changed the visuals significantly as compared to the other games.

Recent Developments and Community Reception
Sun and Moon swapped gym battles for island trials which added more story to the game. The Alolan adventures brought Z-Moves and different variant Pokemon with changes to previously recognizable Pokemon.
Sword and Shield began the Nintendo Switch era, featuring the new Galar region, Dynamax mechanics, and the Wild Area. These games brought a lot of players to Pokemon on Homes and Nintendo Switch, even though with a controversial National Dex.
Spin-off Experiences Worth Exploring
The Pokemon series has many spin-off games besides the main games. Players become Pokemon in the roguelike gameplay of the Pokemon Mystery Dungeon series. Utilising the DS stylus, the Pokemon Ranger titles featured action-oriented capturing mechanics.
Due to augmented reality, Pokemon GO made Pokemon a part of our real world. This free-to-play experience featured location-based gameplay and community events that attracted both old and new fans.
Timeless Appeal Across Generations
There is more than nostalgia which makes some Pokemon games better than others. The game must have a good balance with the mechanics, story, characters, etc. Players can make use of new strategies or Pokemon combinations to replay these quests, which makes them relevant even years after release.
When reading community discussions you can see how different players value different aspects of Pokemon. Different people like different things. Which do you enjoy? Battling and competition? Or exploring and collecting? People like different types of Pokemon games. This explains how there can exist more than one favorite Pokemon game.
The Pokemon franchise keeps growing and changing, but still stays true to its roots. Because of this, old trainers and new ones can find things that suit their games. Each time a new generation comes out, they offer up some really useful features that build on previous successes.