The Nigeria winger arrived at the Boleyn Ground on a season-long loan from reigning Premier League champions Chelsea as the Hammers celebrated historic back-to-back away victories at Arsenal and his former club Liverpool.
The east Londoners are widely considered to have done some of the best business of the summer overall, with many citing the signing of Moses as a case in point.
But speaking to West Ham's official website, Moses has revealed it wasn't the style of football the Hammers played at the Emirates or Anfield that impressed him, or even the fact the club had shown ambition in the transfer market.
Smells like team spirit
Instead it was the togetherness and character the players displayed which convinced him a switch from Chelsea to their fierce East London rivals was the right move for him.
“It’s not just been the way they have played that has impressed me, but it’s been the hard work as well,” he told West Ham TV.
“You can tell everyone is fighting for each other and it was a great result at Arsenal and then at Liverpool at the weekend."
Moses the nomad
Perhaps feeling genuinely part of a squad again in his home city of London is what Moses craves after a somewhat nomadic existence in recent years.
Moses has only ever scored once for the Blues in 23 matches since his switch from Wigan Athletic in 2012.
But he has spent the last two seasons out on loan, first at Liverpool and last season at Stoke City, with varying degrees of success.
Despite now being farmed out again by Jose Mourinho, the pacy star was handed a brand new deal by Chelsea before completing his loan move across London - announced on the Blues' official website - which gives an indication of how highly thought of he is at his parent club.
And that is because he brings so much to the team, including goals, assists and plenty of hard work.
West Ham have been crying out for width in their home defeats to Leicester City and Bournemouth, with full-backs Aaron Cresswell and Carl Jenkinson left exposed.
The Hammers have also lacked penetration and ideas down the flanks in those home defeats.
But Bilic will be hoping Moses, along with fellow winger and deadline day signing Michail Antonio, will help to fix those problems to ensure the last ever season at the Boleyn Ground is remembered for the right reasons.