The game shows great promise, I loved the variety in bugs! I liked that there were active abilities, made the down time between level ups more entertaining. I did wish there was the ability either through a perk or just as a rare chance to get upgraded train cars as a choice, nothing crazy just a level or maybe even have them have effects. Again this could be an unlockable perk or something.

The UI could also use a touch up, specifically an indicator for where the front of the train is located on the car equipping screen.

Gameplay 04:43:19

Game coverage starts at 23:15

CHOO CHOO!! I played the browser version, and sometimes when I held right click , it caused me to exit out of the game/open a new tab. If you can, please add controller support. Frantic clicking with the mouse seemed more effective than anything else. Holding the mouse to auto fire helped, but rapid clicking was best. Music was fine.  Some of the weapons didn't seem to work (missiles, minigun).

For future missions, perhaps have different sizes/shapes of rail and also different music tracks. For the modules, can they be both they keyboard 1, 2, 3 AND the num pad 1, 2, 3? 

Game coverage starts at 23:15

CHOO CHOO!! I played the browser version, and sometimes when I held right click , it caused me to exit out of the game/open a new tab. If you can, please add controller support. Frantic clicking with the mouse seemed more effective than anything else. Holding the mouse to auto fire helped, but rapid clicking was best. Music was fine.  Some of the weapons didn't seem to work (missiles, minigun).

For future missions, perhaps have different sizes/shapes of rail and also different music tracks. For the modules, can they be both they keyboard 1, 2, 3 AND the num pad 1, 2, 3? 

• Youtube Link / Twitch Link
• Graphics : Mostly fine but needs some tweaks
  • E.G. the ground texture is very visibly tiled with the same 4 little dunes everywhere
• GUI : Mostly Fine
  • The 'technician terminal' with the build and inventory is a bit of an eyesore tbf , it's hard on the eyes and it feels like it's half done and missing information.
• Performance : Fine
• Music / Sfx : 
  • Music : Mostly fine but a variety would be nice
  • SFX : A bit lackluster , moving items in the inventory has nothing, monsters dying have nothing, the cannon on the train sounds less like a cannon more like a pneumatic tool
• Gameplay :  A bit lacking atm
• Notes : 
  • Let us click and drag certain turrets over others to swap them out , needing to drag them out to slot in the new one is needlessly tedious.
  • Many of the turrets feel ridiculously short range
  • Something more could be done with the train idea and the tracks, ATM it's literally just spinning in  a chamfered rectangle.
    • Give us rails we can choose to travel down for one reason or another , maybe larger maps where we can cut of an encroaching swarm
    • Give us different outposts and allow us to build little defensive posts to travel to and from
    • Where're the futuristic weapons like a gauss cannon , tesla, cryo, etc?
  • Unsure if it's a bug but you can click to fire significantly faster than the hold
• Final Thoughts : Unless more is done to the game's formula, it's a glorified tower defense game that makes you dizzy, the gameplay right now would be no different if the train was instead stationary.

I like trains! It reminds me a bit of Choo Choo Defenders, though that's a pure autobattler. 

A lot of enemies are reaching the middle and the rail loop is fast enough that it could have been a static TD in the middle. I'd make use of the rails, make them longer and reach more diverse areas, enemies move slower and this way the train cycle brings hope of killing X on Y on the other side of the map. 

Also you could try save settings in PlayerPrefs, they reset after each refresh. The game has a bug with fullscreen toggle, it often bugs and hangs when maximized. It didn't work on ultrawide so I had to play it minimized.

GL HF with your game <3