From Longman Dictionary of Contemporary Englishget in on something phrasal verb informalTAKE PART/BE INVOLVEDto become involved in something that other people are doing or planning Quite a few companies would like to get in on the project. The scheme has proved very successful, and now other local authorities are keen to get in on the act (=become involved in something exciting or interesting). → get→ See Verb table
Examples from the Corpus
get in on • Looks like Rico got in on it, then decided like he was gon na rat to Spider.• Even small independents are getting in on the act in a modest way, though.• They are not anxious for others to get in on the act.• In this case, it allowed Cisco to get in on the Stratacom-Ascend technology alliance.• Though funds are scarce, conservation teams from around the world compete to get in on this important and prestigious project.get in on the act• As the child gets older, other agencies get in on the act.• Now we want to get in on the act.• The Hague Linker is getting in on the act.• The Soviet Army, has also been getting in on the act.• They are not anxious for others to get in on the act.• With Boro in disarray, even Charlton's defenders got in on the act.• Even small independents are getting in on the act in a modest way, though. 