I have just purchased this game, and I not sure, maybe it wasa mistake. The game crashes to desktop upon startup. Technically it does not start at all. More advanced games are running well on my notebook, so this does bother me a bit.

Crash: Assert( Assertion Failed: Failed to determine free disk space for /home/USERNAME/.local/share/Steam/steamapps/common/Train Fever, error 2 ):/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/tier1/../tier1/fileio.cpp:2984

My notebook:

Processor Information:
Vendor: GenuineIntel
CPU Family: 0x6
CPU Model: 0x2a
CPU Stepping: 0x7
CPU Type: 0x0
Speed: 2300 Mhz
4 logical processors
2 physical processors
HyperThreading: Supported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Supported
SSE42: Supported

Operating System Version:
Ubuntu 14.04.1 LTS (32 bit)
Kernel Name: Linux
Kernel Version: 3.13.0-39-generic
Steam Runtime Version: steam-runtime-release_2014-08-20

Video Card:
Driver: NVIDIA Corporation GeForce GT 635M/PCIe/SSE2

Driver Version: 4.4.0 NVIDIA 331.38 (Latest stable version so far)
OpenGL Version: 4.4
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 59 Hz
VendorID: 0x10de
DeviceID: 0xde3
Number of Monitors: 1
Number of Logical Video Cards: 2
Primary Display Resolution: 1366 x 768
Desktop Resolution: 1366 x 768
Primary Display Size: 13.54″ x 7.64″ (15.51″ diag)
34.4cm x 19.4cm (39.4cm diag)
Primary Bus: PCI Express 16x
Primary VRAM: 2048 MB
Supported MSAA Modes: 2x 4x 8x 16x

Sound card:
Audio device: Intel PantherPoint HDMI

Memory:
RAM: 3933 Mb

Miscellaneous:
UI Language: English
LANG: en_US.UTF-8
Total Hard Disk Space Available: 934839 Mb

Assert( Assertion Failed: Failed to determine free disk space for /home/USERNAME/.local/share/Steam/steamapps/common/Train Fever, error 2 ):/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/tier1/../tier1/fileio.cpp:2984