Created for the LibGDX game jam.

Takes a lot of inspiration from Onslaught TD, an old flash game. Now its in HTML5 and in space, with some other new mechanics.

There is no dev log, because over break I was focusing on family and only working on this in the down times. I didn't want to commit to documenting everything, apart from the commits themselves.

Anyways, I do have the source code available on github.

PlatformsWindows, macOS, Linux, HTML5
Rated 4.0 out of 5 stars
AuthorThe Paper Pilot
Made withlibGDX
Tagscombos, libGDX, Space, Tower Defense, upgrades
Average sessionAbout a half-hour
InputsKeyboard, Mouse
LinksSource code


Download NowName your own price

Click download now to get access to the following files:

SolarTD.jar 16 MB


Log in with to leave a comment.


Thanks for this game. Allowed me to see what kind of things are needed for a tower defence game

wave 133

Hey there,

I liked it. But.. is there an end?

I play medium, I have the screen full with towwers and over 2k of each resource.

No more place to build and no upgrade options.

So it would also be nice to be able to:

- upgrade the towers

- use 3 differnt keys (keyboard) to build towers (so you don't have to mouse around so much)

- have the enemies grow stronnger faster - I'll now just wait if i will die at some point :)

Wave 83 right now.


Ouch.. posting the comment killed the game :(


No, there is no end. Fortunately there's a lot you haven't seen yet!

You can upgrade the towers. It's in the menu. There's also a combo mechanic to explore, for additional ways to kill enemies!

You can press 1-6 on your keyboard to select the various towers. You can also press S to sell and M to move towers, SPACE to pause/resume the game, and ESC to open/close the menu.

The enemies grow stronger faster on harder difficulties. If normal is too easy just go up to hard!

Thanks for playing! Congrats on getting to wave 83! At wave 100 the waves will get bigger!

Oh, and about the space issue. I tried to make space a resource that the player needs to manage in addition to the building costs. Building towers is generally more efficient than upgrading (combos blur that line a little), but eventually towers have to be placed in less and less optimal locations and eventually not at all- so you need to upgrade, combo, etc. That said, map 5 is larger than the others, if you would like more space. Of course, most of the space is unusable since the path doesn't go everywhere, but for generators it shouldn't matter.

Thanks for the indepth reply, I will make sure to play again. - And this time with the full knowledge about upgrades and keyboard commands!

Really interesting game! Sure there will be a lot of strategy to it when I learn more about the combos.

good job