The fun thing about indie developers is that you never know when they are going to come up with something unique. Take for example Rollers of the Realm, by developer Phantom Compass; it combines video game pinball with a role-playing game (RPG).
Since a majority of your gameplay will be playing pinball the story is kept light, but engaging. You start as the Rogue. She has come to town with her dog looking for some easy targets. Eventually her dog gets kidnapped by the town blacksmith who wants to make the dog his dinner. The Rogue encounters a drunken Knight who decides to help her recover her dog and a Healer who wants to help defeat the blacksmith. You work your way through different pinball tables, which represent various parts of the town, until you finally encounter the Blacksmith in his forge. When you finally defeat him you find out his brother is the evil Baron of the realm and now you have to hide in an outlaw camp to avoid capture. Here is where your adventure really starts.
The gameplay mechanics are your typical video game pinball: flippers, bumpers, teleport holes, rails, etc. What makes it different is that each character in your party is represented by one of your balls on the table. Each ball has its own specialty. The Rogue has the ability to steal gold from characters on the table and does "backstab" damage to enemies. The Knight is a larger armored ball that can do more damage and can break boxes easier. The Healer can heal your flippers and has a special power of bringing back lost balls, if you have enough mana. All the balls can generate mana by hitting things like torches and other special items on the table. The other characters can also use the mana pool in order to activate unique magic powers. The Rogue can summon her dog to the field for "multi-ball" action and the Knight can temporarily block the gutter so he can't "die." You can swap between the balls as needed by trapping the ball with one of the two main flippers and then selecting the character you want.
As you play you gather gold. This gold, in typical RPG fashion, can be taken to shops where you can purchase items to upgrade each character. You can even add new members to your party by "hiring" them from the shop.
The tables play out much like any other pinball game; somehow make the balls into certain places to progress further. Other times you have encounters where you have to defeat all the enemies on the table. For the most part, the pinballs physics are sound given that there are certain exceptions for powers of the characters. Difficulty does ramp up as the game progresses; you'll even eventually get tables that are multi-tiered that you have to work through section by section to clear the whole table.
I love both video game pinball and RPGs so for me Rollers of the Realm is a bit of a no brainer. I do have frustrations with the pinball aspects, but then again I have those same frustrations with regular video game pinball. I may love the genre, but I am no master of it, so sometimes trying to manipulate a ball to go into certain places can be a little bit of a challenge.
I am really enjoying Rollers of the Realm. There is an arena mode that you can open up after a while that lets you "grind" to earn more gold so you can buy those power ups you just know you are going to need for later levels. In fact the one complaint I would have is gold seems to be hard to earn so grinding takes a bit longer, but if you've spent any amount of time in World of Warcraft you know grinding all too well.
I say if you like video game pinball definitely check out Rollers of the Realm, the characters and powers add a unique twist on the normal fun game of pinball. If you are an RPG fan it might be hard call to recommend. You have to be up for something very different than what you are used to as far as "adventure."