Same here. Maybe I should have looked at this forum before buying this game... feels like I bought a demo.

This topic seems to have lost a lot of people confirming the game wasn't working for them. That's not the way to handle bug reports, gog.

Game has been updated.

Played it a bit. So far so good.

Same here.

I figured once the summer sale was over, they would get it fixed promptly. Thanks GOG people.

Seems to work for me too. Finally :)

Gave the new version a shot and it worked well. Better than I expected even. No crashes.

############################################################################################
ERROR in
action number 1
of Draw Event
for object oSpawn:

Data structure with index does not exist.
at gml_Script_pal_swap_set
############################################################################################
--------------------------------------------------------------------------------------------
stack frame is
gml_Script_pal_swap_set (line 0)
gml_Object_oSpawn_Draw_0

Still no Solution?........

Indeed, new Version worked fine for me. Thanks Chucklefish/GoG Team.

Ditto to the latest update working (1.2.8 (GOG-13)). Thanks guys!

Works now for me. Thx

Just bought & installed today on a Mac. It runs fine the first time. But afterwards, it crashes on startup.

Process: Mac_Runner [11008]
Path: /Applications/Games/Risk of Rain.app/Contents/Resources/game/RiskofRain.app/Contents/MacOS/Mac_Runner
Identifier: com.riskofrain.riskofrain
Version: 1.2.8 (42)
Code Type: X86 (Native)
Parent Process: ??? [1]
Responsible: Mac_Runner [11008]
User ID: 501

Date/Time: 2016-03-03 17:37:31.654 -0800
OS Version: Mac OS X 10.10.5 (14F1605)
Report Version: 11


Crashed Thread: 5 Dispatch queue: doGameEngine :: NSOperation 0x954d00 (QOS: USER_INITIATED)

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000718b9118

VM Regions Near 0x718b9118:
__LINKEDIT 0000000048ebd000-0000000048f23000 [ 408K] r--/rwx SM=COW /System/Library/Extensions/GeForceGLDriver.bundle/Contents/MacOS/GeForceGLDriver
-->
__TEXT 000000008fe91000-000000008fec5000 [ 208K] r-x/rwx SM=COW /usr/lib/dyld

I have the same error. After a few minutes, the game freezes.
I am on Fedora (Linux).
Here is the terminal text:
https://jpst.it/MmhT
And here is gog-system-report.sh:
https://goo.gl/aycQ0n

Hey! I had the exact same issue, and I think I found the source!: The Spikestrip item. I started taking screenshots each time the game froze, and two things were always present:
- I was receiving damage.
- Spikestrip was one of the two last items I had acquired.
The definitive proof came after I was already suspecting this. In a run I found Spikestrip as the first item. Got it, and went straight to an enemy to receive damage. First hit: bam! game froze.
I also had some screenshots from good runs without crashes, and guess what? yes, no Spikestrip, hehe.
The screenshots from the crashes: http://imgur.com/a/2jsfx

same here, being hit while carrying the Spikestrip item makes the game freeze.
This happens on Debian Jessie x86_64.

Thanks for the tip, guys!
I'm on a Lubuntu system right now.
I'll try and test the Spikestrip theory.