I think this would be a completely fantastic game and totally worth it -- if it worked.

Co-op mode is completely riddled with errors. Just in the 2 hour span we had - incorrect characters that we selected upon entering a stage, a end-game freeze that made us restart the run, my co-op partner was completely unsynced and unable to see enemies or various other aspects of the level, then finally after restarting our run after restarting from the second point - right towards the end a enemy decided to jump into the terrain and become un-targetable. Which is when we said to hell with it and stopped (since it would be the second restart of the same level).

It's been 3 years...where is the quality control on something like this?

So sure if you want to play the game solo - you're probably fine, but if you're aiming to play this with friends I'd avoid it like the plague.

--edit;
I wanted to edit this after I thought about it to point out that it seemed like every issue happened specifically on the Okada stage (Freeze after Stage 2 beating the Sumo bosses, Ninja jumping into the walls during the mountain climb, unable to see the enemies on Stage 1) The incorrect characters could have been a weird selection error and I'll write that one off but I've seen reports of people spawning in doing other chars stuff with a different character... So maybe it's best to do Okada first if you're playing co-op regardless of what route you'd like to do? Maybe we'll try later and I'll update. I know it could be a coincidence but afair we had zero issues outside of the incorrect characters on our first run up until Okada (which we did as our last stage - which is when the first unsync error happened.) We did Anubis > Okada our second run, restarted our games prior - and that's when the freeze and enemy clipping issues happened. The fact we did the other 3 stages with no issues on our first run and started having issues on Okada though is just suspicious so may just be best to knock her out first with a single stage error rate than messing up a late run

idk its extremely short and can be beaten under 2 hours, and it was way too easy with difficulty sliders on max

Double Dragon Gaiden is the best thing to happen to this franchise since The Revenge.

While there have been solid efforts in the past (Advance) and more recently (Neon), it is Gaiden where everything just clicks. The combo system, the partner-tag system, the specials, the 'crowd-controls,' the rogue-lite mechanics, and the variety of characters all make for an amazing and incredibly fun experience.

Additionally, this game is perfect for quick solo pick-up-n-play sessions or a long, co-op run with friends. As you progress through the game, you earn the ability to add more playable characters to your roster. Each of these characters have unique move-sets and play very differently from one another - requiring you to modify your tactics when taking on specific groups of enemies.

Speaking of enemies, there are several enemy types that compel you to approach every encounter with specific strategies based on the character(s) you are using. This is even more important when fighting mid- or end-stage bosses... all of whom have a wide array of unique moves.

In addition to the characters and enemies is the actual gameplay. One thing that makes Double Dragon Gaiden exciting to play over and over is the simple, albeit fun, rogue-lite mechanics. Indeed, the upgrade system is implemented very well... at the end of each "chapter" you are granted an opportunity to enhance your characters based on a randomized list of upgrades. (These upgrades are lost once you finish the play session in which they were applied.) Some of these upgrades are passive (like more health) and some are active (like stronger combos) and make each session unique.

Button input and movement feel great and, with the aforementioned upgrades, even the bulkier characters can become fast and lethal. It is fun to experiment with the tag-system to extend combos or add special moves to the end of a combo using your secondary character.

Moreover, the game allows you to choose the order in which you progress through the stages. As you complete one level, the other levels become longer and more difficult. Because there are a unique stage hazards in each level, you will want to choose the order carefully.

Graphically, the pixel art is absolutely gorgeous. There are plenty of nods to the original arcade games found throughout each of the levels, and the characters all have that exaggerated stature that became the norm back on the NES. Animations are fluid and look beautiful, while the small details in each of the four "worlds" show just how much care was put into this game.

The music is just as good. There are plenty of selections taken from past DD games and, of course, the main theme that will live in your head forever more.

There is a lot more to discover in this game that I will not list here, but know that the developers have been actively supporting this game with several free DLC packs and small fixes.

If it isn't obvious already, I highly recommend Double Dragon Gaiden. This is a great time for beat 'em up experts and novices - alone or with friends!