This is a quote from steam forums:
"We have also thought of Crowd Funding in the past. We tried to register Troubleshooter in Kick Starter very carefully. However, Kick Starter had a country list to apply for, and Korea(of course South Korea) was not included at that time. We had no choice but to register Troubleshooter in Crowd Funding exclusively for Korea. The fundraising amount was about 27,000$, and the result was a failure...
We would like more Global Crowd Funding to support Korean projects. I would be very happy if we could get Kick Starter's help when we try to produce a sequel to Troubleshooter. :D"
So, they tried crowd funding, but they failed. Inspite of the failure, they still finished the game. That is what I call determination.
You can see that in that failed Korean-only campaign, they did raise a fair bit of money, but from less than 300 people. I have no idea how that compares to the level of support projects tend to get from that website. I don't know how big crowdfunding is in Korea, if at all.
https://tumblbug.com/troubleshooter
It looks like the korean crowdfunding campaign had included a beta test, and ~8 months afterwards they did launch EA on Steam - so probably they always intended to try and publish the game no matter what, and it wasn't a "fund our twinkle in the eye" request. They claim that development began in '14.
After this moderate success, you'd hope they can do a kickstarter for their next project or something. They'll need to spend a lot of time working it out though - there can be a ton of annoying bullshit when you have to set up a foreign bank account in a foreign language and tie it to your company (however they are registered in Korea), blah blah.