Rainbow six Siege is a game that I have put many hours into, and I have seen it going through many different metas since siege has first came out. Like all games, this game has its quirks, such as some questionable hit detection and a toxic casual communtiy, but there is nothing quite like this game.

Terrorist Hunt-
Terrorist Hunt is a often overlooked game mode that can be alot of fun when playing with firends, a good way with practing your aim and stragtigies, and a good way to get some easy renown. I ususally play terrorist hunt to chill after playing a long session of ranked, and its just fun to mess around with your friends and get some easy renown.

Casual-
Casual is where the majority of the community plays in, and this is where the majority of toxicity and complaining happens in the siege community. Most of the people crying for nerfs on operators or anything that adds more of a learning curve (i.e. predictable recoil) comes from the casuals. Also, most teamkilling and toxic comments happen when in casual. I only play this game mode to practice for ranked, but it is fun to go in with your friends and do weird strats that you otherwise wouldn't be able to do in ranked.

Ranked-
Ranked is the competitive game mode of siege, and is where I spend he majority of my play time. Like many other competitive shooters with a ranking system, siege put you up against players with a similar rank to you to insure a fair game. Because of this, the majority of games are long (about 20- 30 minutes) and can offer alot of great and memorable moments.

Maps and Operators-
There are currently 33 operators in the game, 16 for attack and 17 for defense (There are still 3 more operators to be added in the next dlc) Each operator has there own unique ability that can contribute to your team and fit certain play styles. All operators can be unlocked with renown, even dlc operators , but dlc operators cost 25,000 renown each. There are 15 playable maps in this game (17 but 2 of them are completly out of casual and ranked rotation), but only 9 of them are in the ranked rotation (for balance). When new maps are added with each dlc, these maps are available to everyone for free. This allows all maps to be consistently played.

Combat-
The combat in siege is different from many other games. Headshots from all weapons (expect for Caviera's lusion) are all one shot kills. This creates a greater emphasis for being accurate and aiming for the head in firefights. A problem with this games combat, however, is that the hit detection is very inconsistent and there is random recoil. The hit detection is decent, but the random recoil of weapons in this game causes misalignment with your optic. This means if I aim directly at someones head, the random recoil can cause it the bullet to not travel where the reticle is. Ubisoft has addresed this and have attempted to implement predictable recoil, but the casual communtity started complaining and saying "This will turn this game to similiar to csgo." even though that's further from the truth.

Conculsion-
If you are looking for a competitive shooter with a very different take on combat and gameplay, I highly recommend this game. Yes there is a very steep learning curve, with a large emphasis on map knowledge, but after getting past that, you will enjoy this game.

Edit- As the game gets older and older and ubisoft changes the games meta, the community has become more toxic than ever. Insults, teamkilling, and overall garbage in the community has made the game not enjoyable. Although the core mechanics and gameplay had improved overall, there are still several unbalanced operators. I can not recommend this game in the state it currently is.