Please follow the format? Or I will be compelled to recommend a RM15-20k laptop for you haha   

Holy that is one very high budget   

Usually graphic designers will pick Mac right away since Mac OSX is much more smoother when it comes to workflow.. and of course, Mac screens are high quality and well-calibrated. But if you want to game, then its better to get a Windows-based notebook already

You have an awesome budget, so can consider these:
15.6"
Dell
XPS 15, i7-4702HQ + Nvidia GT750M (GDDR5) + 32GB mSATA + 500GB(5400rpm) + (3200x1800; Touch)@RM6299 [2.0kg], 16GB, W8.1SL, backlit keyboard, 61Whr

Precision M3800- I don't have the detailed specs for this particular model. But it looks exactly as the XPS 15 above, but with a more powerful Quadro GPU and SSD, definitely worth considering

HP
ZBook 15, i7-4700MQ + Nvidia Quadro K1100M + (1920x1080; anti glare)@RM6399, 4GB, 750GB(7200rpm), W8

MSI
GT60-2OJ-661MY, i7-4800MQ + (Nvidia Quadro K2100M) + (1920x1080; anti-glare 95% NTSC)@RM6999, 8GB, 1TB (7200rpm), W7P, multi-color backlit, 3 years warranty

**Prices in RRP
**extend warranty to 3 years with remaining budget
*upgrade to at least 8GB RAM if applicable

Personally I would go for the Precision M3800 (preferably the one without qHD+ resolution), too damn sexeey already haha   

Happy choosing ya~
Of course u can still choose an Apple, but you'll need to bootcamp, just for your games 

Nvidia's GT720M and GT820M graphic cards are entry level GPUs, or to put it badly, the worse performing GPUs of the line
They should be fine for Dota 2, but I'm not too sure about L4D2
GT740M is a mainstream GPU is notebooks around RM2-3k, and is a whole lot better in terms of graphic performance

That reply wasn't for you haha, sorry, post updated