Our modular playgrounds for cats are like the Lincoln Logs of days gone by. This innovative system allows your imagination to run wild - configure the perfect unit that meets your needs! Start Small and Build Over Time Our modular playgrounds can be purchased in sets ranging in size from very large to our Starter Kit, which will create a base sized small unit for your cats to enjoy. The pieces are completely configurable, allowing you to purchase additional sets or components at any time to add on to your unit! Customize to your specific space Our completely configurable system allows you to easily build something that works for your space! Our 'kits' pictured are suggested assembly, but you can build them in any way that you choose. Choose your colors or change them later Our hammocks and condos come in basic beige (shown in red in most pictures, as its easier to view), but you can choose from a wide variety of fabrics and colors. If your color tastes change in the future, just order replacement hammocks and condos! Easily replace parts Our modular system is built to last, all parts are individually replaceable in the event that any are destroyed through repeated scratching. There is no need to replace the entire unit!