London - Betfair, a U.K.-based online gambling firm focused on horseracing, has acquired Macrovision's (NASD: MVSN) TV Games Network interactive TV horserace wagering service for $50 million in cash.

London - Orbis, a provider of interactive gaming and betting technologies, announced that it has acquired U.K.-based online games developer Electracade for $3.8 million in cash.

Carlsbad, Calif. - NTN Buzztime, a provider of interactive TV trivia games in bars and restaurants, announced on Friday that Michael Fleming has resigned as the company's interim CEO, chairman and board director. The company named recent board addition Jeff Berg as its new chairman, and said its board has created a search committee to evaluate qualified candidates for the role of permanent CEO.

New York - Music Choice, a provider of music and video content on pay-TV and other platforms, on Tuesday introduced ShowOff, an interactive TV feature that lets viewers submit text message and photo "shout-outs" that will appear on-screen during programming. The feature will support submissions via mobile phone, email, AOL Instant Messenger, and a dedicated ShowOff Web page.

San Francisco - OpenTV (NASD: OPTV), a provider of interactive TV software and services, announced on Tuesday that it has acquired Ruzz TV, an Australia-based provider of software for television broadcasters.

New York - Prizemo, a developer of interactive entertainment for online, mobile and TV audiences, announced on Monday its official launch, and the debut of its first game show, "Show You the Money." New York-based Prizemo was founded by CEO Jakob Kuznicki, former vice president of licensing at Jamba; and Anthony Rodol, former director of new media and mobile at Warner Music Group. "Show You the Money" is an interactive TV game show where viewers are encouraged to text answers to trivia questions for the chance to win free ringtones and other mobile content.

San Francisco - Yahoo (NASD: YHOO) and Intel (NASD: INTC) on Wednesday announced a partnership that will see them collaborate on the development of Web widgets that will bring interactive features to TV viewing.

Waltham, Mass. - Navic Networks, a provider of audience measurement data and software for optimizing the delivery and placement of interactive TV ads, has been acquired by Microsoft (NASD: MSFT). While terms of the acquisition were not disclosed, TechCrunch pegged the purchase price at between $200 million and $300 million.