Yes!  We have two types of rubber interlocking tiles, a hidden insert type (Konnecta) and a Puzzle Gym Tile.  The Konnecta rubber gym tiles are designed for professional gym use and come in a variety of colours and flecked designs.  They have small plastic square inserts which allow each tile to slot together underneath the tile and out of sight.  This provides extra stability and makes the installation process very easy.  Our other rubber gym tile which connect together, are our rubber Puzzle Tiles.  These are a fantastic option for those of us who are not confident with DIY and 'fiddly things'.  The rubber mats have a Jigsaw shaped profile which insert together really easily.  Both rubber gym mats come in different thickness options and styles to suit various tastes.