5 Ways to Improve the Left 4 Dead Series

By comparison, Left 4 Dead 2 lacks that level of innovation and is more like a sporty new body kit applied over an old chassis-it looks better, runs a bit faster and has some slick upgrades, but underneath the shiny, metallic veneer, it doesn't bring anything new to the table. Had it had a little more development time, we could've perhaps seen the next evolution of the series, rather than a relatively basic tune-job.