My favorite game is Dominion. Although the theme is weak in it, I just haven’t found a deck-builder that I like better.
Another favorite of mine is Five Tribes. This game uses a mancala mechanic on a randomly generated and seeded board. It can become quite “puzzly”.
Pandemic is an awesome game and I often play it solo. It really shines with the “On the Brink” expansion. I haven’t tried the other expansions yet. I do have Pandemic Legacy on the way, though. My sons and I are really looking forward to that since we are having a good time with Risk Legacy.
Speaking of Risk, I am not really a fan of the original game, but Risk Legacy has been fun. We are at 8 games through the 15 game Legacy campaign. Also, the Star Wars Original Trilogy edition of Risk was fun the one time I got to play it. My son has the new Star Wars Risk, but it is not really a “Risk” game. They just gave it the name for promotion. It is fairly fun, even though it seems to be imbalanced in favor of the rebels.
Another game that I really like, but don’t play as often because of the length and heaviness of the game is Alchemists. This a deduction game with pseudo-Worker Placement mechanic.
One Night Ultimate Werewolf is a variation on the Mafia/Werewolf games that only lasts 10 minutes. It is a lot lighter than regular Werewolf, but the groups I play with always have a blast with it.
I adore the game Love Letter. While definitely a light game, elegance of the mechanics to create such satisfying gameplay is amazing.
Pandemic: The Cure is a dice version of Pandemic. Even though it is a cooperative game with the same theme, the gameplay is quite different and it is a fun game. It has a push-your-luck mechanic that can make for some tough choices.
Hanabi is a cooperative card game where you do hold your cards so that you cannot see them, but the other players can. You then work together by giving clues to each other about what cards they have in order to play the cards as required. A very nice “thinking” game.
No, Thanks is an excellent little filler card game.
Forbidden Desert is another Matt Leacock (of Pandemic fame) cooperative. You move around on a shifting layout looking for parts to a steampunk type airship to escape the desert.
Other games that get played, but do not rank quite as highly as the ones listed above for me include
Sheriff of Nottingham - A bluffing and negotiation game.
Marvel Legendary - A coop deck-building game featuring superheroes and villians from the Marvel universe.
7 Wonders - A card-drafting game where you are building up your civilization with different buildings.
Sushi Go - Sort of a 7 Wonders lite. You are building up your sushi meal instead of a civilization.